*{
	margin: 0;
	padding: 0;
}

h1{
	text-align: center;
}
#fang_title{
	margin-top: 15px;
	margin-bottom: 40px;
}
#fang_tiji{
	margin-bottom: 40px;
}
span{
	font-size: 2em;
}
input{
	line-height: 50px;
	height: 50px;
	width: 50%;
	font-size: 2em;
	color: red;
}
#fang_duan{
	margin-top:40px;
	margin-bottom: 40px; 
}
#fang_liao{
	margin-bottom: 40px; 
}
#fang_xia{
	margin-bottom: 40px; 
}
.zhiliang{
	line-height: 50px;
	height: 50px;
	width: 15%;
	font-size: 2em;
	color: red;
	display: inline-block;
}
#zhiliang{
	line-height: 50px;
	height: 50px;
	width: 15%;
	font-size: 2em;
	color: red;
	display: inline-block;
}

button{
	margin-top: 80px;
	width: 300px;
	height: 60px;
	margin-left: 80px;
	font-size: 1.5em;
}